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%I #22 Jul 01 2023 14:33:58
%S 6,7,0,8,7,3,4,7,9,2,9,0,8,0,9,2,5,8,6,1,3,3,1,6,9,8,3,0,3,1,4,2,6,2,
%T 5,8,2,1,6,8,2,9,3,6,2,5,0,6,9,0,3,4,1,6,6,9,0,3,4,7,6,8,6,9,1,5,4,1,
%U 5,8,1,9,3,7,8,7,6,0,2,1,8,9,4,8,4,5,0,5,1,2,6,5,3,7,4,7,0,4,0,2,9,1,9,4,7
%N Decimal expansion of -sqrt(7) + sqrt(11), Andrica's Maximum A_n.
%C For each consecutive prime pair, p and q with p < q, d = -sqrt(p) + sqrt(q) is unique. Place d in order from greatest to least and specify p. This is the maximum d.
%H Titu Andreescu and Dorin Andrica, <a href="http://blngcc.files.wordpress.com/2008/11/andreescu-andrica-problems-on-number-theory.pdf">Number Theory, Structures, Examples, and Problems</a>.
%H Marek Wolf, <a href="http://arxiv.org/abs/1010.3945">A Note on the Andrica Conjecture</a>, arXiv:1010.3945 [math.NT] (2010).
%e 0.670873479290809258613316983031426258216829362506903416690347686915...
%t RealDigits[- Sqrt[7] + Sqrt[11], 10, 111][[1]]
%Y Cf. A079296, A218014, A218015.
%K cons,nonn
%O 0,1
%A Marek Wolf and _Robert G. Wilson v_, Oct 18 2012
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